sleeping through the night?

Diana
Took my little one for her check up, she's 5 months.  I was told by the np that there is no reason why she shouldnt be sleeping through night.  She wakes about every 3 hours for feedings (ebf) and goes right back to sleep- rarely ever actually opening her eyes.  She said she's only feeding out of habit and I need to kick her out of my room as well.  She even suggested giving her two jars of food! I'm like she barley eats one before showering and going to slee.  I was taken back by all the "instructions" she gave me.  I even asked her why a recent study by the apa states babies should sleep in the same room until they are 12 months- she responded "everyone is going to have their opinions"
Any advice/ thoughts ? Does your little one co-slee in the same room and sleep through the night ? 
Thanks.